US4109458A - Date and day correcting device of a timepiece - Google Patents

Date and day correcting device of a timepiece Download PDF

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Publication number
US4109458A
US4109458A US05/744,926 US74492676A US4109458A US 4109458 A US4109458 A US 4109458A US 74492676 A US74492676 A US 74492676A US 4109458 A US4109458 A US 4109458A
Authority
US
United States
Prior art keywords
correcting
day
lever
date
wheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/744,926
Other languages
English (en)
Inventor
Keiichi Suzuki
Keikichi Takahashi
Eiichi Matsuura
Akinobu Harada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Instruments Inc filed Critical Seiko Instruments Inc
Application granted granted Critical
Publication of US4109458A publication Critical patent/US4109458A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/25—Devices for setting the date indicators manually

Definitions

  • This invention relates to a date and day correcting device and more particularly to a date and day correcting device which corrects date and day by sliding a correcting lever guided by at least two pins on a base plate of a timepiece.
  • a correcting device of this type corrects date and day by intermeshing a date and day correcting wheel, which oscillates mounted on a oscillating lever with a date and day wheel, by operation of a stem.
  • a wide space in a thickness dimension of a timepiece is required and it is very difficult to make the timepiece thin.
  • a number of pins in the device is large and construction is complicated, operating characteristics are not good, price is high and reliability is not satisfactory.
  • This invention aims to eliminate the above mentioned difficulties and insufficiencies.
  • FIGS. 1 and 2 are a plan view and a sectional view showing the essential elements of the date and day correcting device according to the present inveniton,
  • FIGS. 3 and 4 are diagrams showing other embodiments of the present invention.
  • numeral 1 is a date wheel
  • 2 is a day star with dial disk and both wheels 1, 2 are rotatably supported by a base plate 3.
  • Numerals 4, 5, 6 are pins respectively set in the base plate or the like, and 7 is a correcting wheel which rotates coincidently with a stem 8 as necessary.
  • Numeral 9 is a date and day correcting lever which slides in a horizontal direction guided by elongated or elliptic holes 10, 11 which coincide with the above mentioned pins 4, 5.
  • the date and day correcting lever 9 comprises a protruding portion or tab 12 (refer to FIG. 2) so that the lever 9 catches a tooth 7A of the correcting wheel 7 which intermeshes with the stem 8.
  • the lever 9 is provided with a spring portion 9A so that the lever 9 is automatically restored to a neutral position A without contacting with the date wheel 1 and the day star with dial disk 2.
  • the end point 9B of the spring portion 9A is dimensioned to engage with the pin 6 and remain fixed therewith.
  • the lever 9 can be restored to the neutral position A by the spring members 16 and 17 provided between the pins 4, 5 and the pins 14, 15 on the lever 9 as shown in FIG. 3.
  • the present invention since date and day correction are accomplished by a respective portion of lever 9, the number of parts can be sharply cut in comparison with the conventional type device. Therefore excellent operating characteristics, low cost, high reliability and high quality timepiece can be provided a quantity. At the same time, a dimension in the timepiece thickness direction is reduced resulting in a thin timepiece since a space sufficient for the lever is enough. Therefore, the present invention contributes to make the timepiece thin and compact.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
  • Stringed Musical Instruments (AREA)
US05/744,926 1975-11-27 1976-11-24 Date and day correcting device of a timepiece Expired - Lifetime US4109458A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP50-160640[U] 1975-11-27
JP1975160640U JPS5616549Y2 (ja) 1975-11-27 1975-11-27

Publications (1)

Publication Number Publication Date
US4109458A true US4109458A (en) 1978-08-29

Family

ID=15719291

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/744,926 Expired - Lifetime US4109458A (en) 1975-11-27 1976-11-24 Date and day correcting device of a timepiece

Country Status (7)

Country Link
US (1) US4109458A (ja)
JP (1) JPS5616549Y2 (ja)
CH (1) CH619343B (ja)
DE (1) DE2653653C2 (ja)
FR (1) FR2333284A1 (ja)
GB (1) GB1509850A (ja)
HK (1) HK26382A (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3011666A1 (de) * 1980-03-26 1981-10-01 Kieninger & Obergfell Fabrik für technische Laufwerke und Apparate, 7742 St Georgen Elektrische uhr mit analoger zeitanzeige
US4837755A (en) * 1987-05-25 1989-06-06 Montres Rolex S.A. Device for controlling or correcting the readout of the day of the week or date for a wrist watch
US5119349A (en) * 1987-12-25 1992-06-02 Citizen Watch Co., Ltd. Display device by means of a hand
US20160313698A1 (en) * 2015-04-22 2016-10-27 Seiko Epson Corporation Timepiece and method for manufacturing timepiece

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714774A (en) * 1970-12-14 1973-02-06 Schild Sa A Correction mechanism for calendar watches
US3732687A (en) * 1971-02-17 1973-05-15 Citizen Watch Co Ltd Calendar correction mechanism for timepiece
US3775966A (en) * 1971-07-08 1973-12-04 Seiko Instr & Electronics Day-and-date changing device for a wrist watch
US3779000A (en) * 1971-10-06 1973-12-18 Suisse Horlogerie Correction device for day-and-date calendar watches
US4027468A (en) * 1975-10-31 1977-06-07 General Time Corporation Day-date mechanism for travel clock
US4028881A (en) * 1974-07-26 1977-06-14 Kabushiki Kaisha Daini Seikosha Mechanism for correcting calendar in a watch

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS494569A (ja) * 1972-04-22 1974-01-16
JPS569664B2 (ja) * 1974-04-09 1981-03-03
CH676270A5 (en) * 1988-09-02 1990-12-28 Walser & Co Ag Component-securing equipment to concrete - has stirrup with tapped, ends screwed to baseplate fixed to shuttering

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714774A (en) * 1970-12-14 1973-02-06 Schild Sa A Correction mechanism for calendar watches
US3732687A (en) * 1971-02-17 1973-05-15 Citizen Watch Co Ltd Calendar correction mechanism for timepiece
US3775966A (en) * 1971-07-08 1973-12-04 Seiko Instr & Electronics Day-and-date changing device for a wrist watch
US3779000A (en) * 1971-10-06 1973-12-18 Suisse Horlogerie Correction device for day-and-date calendar watches
US4028881A (en) * 1974-07-26 1977-06-14 Kabushiki Kaisha Daini Seikosha Mechanism for correcting calendar in a watch
US4027468A (en) * 1975-10-31 1977-06-07 General Time Corporation Day-date mechanism for travel clock

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3011666A1 (de) * 1980-03-26 1981-10-01 Kieninger & Obergfell Fabrik für technische Laufwerke und Apparate, 7742 St Georgen Elektrische uhr mit analoger zeitanzeige
US4837755A (en) * 1987-05-25 1989-06-06 Montres Rolex S.A. Device for controlling or correcting the readout of the day of the week or date for a wrist watch
US5119349A (en) * 1987-12-25 1992-06-02 Citizen Watch Co., Ltd. Display device by means of a hand
US20160313698A1 (en) * 2015-04-22 2016-10-27 Seiko Epson Corporation Timepiece and method for manufacturing timepiece
US9791832B2 (en) * 2015-04-22 2017-10-17 Seiko Epson Corporation Timepiece and method for manufacturing timepiece

Also Published As

Publication number Publication date
JPS5616549Y2 (ja) 1981-04-17
JPS5272763U (ja) 1977-05-31
DE2653653A1 (de) 1977-06-08
HK26382A (en) 1982-06-24
FR2333284B1 (ja) 1981-07-10
CH619343GA3 (ja) 1980-09-30
GB1509850A (en) 1978-05-04
DE2653653C2 (de) 1982-11-04
CH619343B (fr)
FR2333284A1 (fr) 1977-06-24

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